The synthesis and nonlinear optical (NLO) properties of a series of nitrostilbene-, dinitrostilbene-, and dicyanomethylenedihydrofuran-based chromophores potentially useful in photorefractive multifunctional polymers are reported. Electronic absorption spectra have been measured in different solvents. Electric field induced second harmonic (EFISH) generation results show that the 2-dicyanomethylen-3-cyano-5
据报道,一系列基于硝基
苯乙烯,
二硝基苯乙烯和二
氰基亚甲基二氢
呋喃的生色团的合成和非线性光学(NLO)性能可能在光折变多功能聚合物中有用。电子吸收光谱已在不同溶剂中测量。电场诱导的二次谐波(EFISH)生成结果表明,2-二
氰亚甲基-3-
氰基-5,5-二甲基-
2,5-二氢呋喃部分可导致最佳的NLO性能。与单硝基类似物相比,基于
二硝基苯基的生色团显示出降低的非线性响应。理论上还确定了选定的硝基-二硝基对的非线性光学性质。